The only member of the house to appear is Ser Amory Lorch.
Ser Amory was one of the raiders commanded by Lord Tywin Lannister to burn and destroy the riverlands. He was made castellan of Harrenhal after Lord Tywin marched out with his army, only to be betrayed by the sellsword captain Vargos Hoat and fed to a bear at Lord Bolton’s command after he had taken the castle.